WiFi

BSSID()

WiFi.BSSID() retrieves the 6-byte MAC address of the access point the device is currently connected to.

SerialLogHandler logHandler;
byte bssid[6];

void setup() {
  Serial.begin(9600);
  // Wait for a USB serial connection for up to 30 seconds
  waitFor(Serial.isConnected, 30000);

  WiFi.BSSID(bssid);
  Log.info("%02X:%02X:%02X:%02X:%02X:%02X", bssid[0], bssid[1], bssid[2], bssid[3], bssid[4], bssid[5]);
}